Petra Heck, Andy Zaidman. An analysis of requirements evolution in open source projects: recommendations for issue trackers. In Romain Robbes, Gregorio Robles, editors, 13th International Workshop on Principles of Software Evolution, IWPSE 2013, Proceedings, August 19-20, 2013, Saint Petersburg, Russia. pages 43-52, ACM, 2013. [doi]
Abstract is missing.